Mocha test config helper.

mochaTestConfig.js

// other good ref:
// https://medium.com/@kayodeniyi/setting-up-tests-for-react-using-mocha-expect-and-enzyme-8f53af96fe7e

// example call:
// mocha --reporter spec mochaTestSetup.js "components/*.spec.js"

const jsdom = require('jsdom').jsdom
process.env.NODE_ENV = 'test'

// -------------------------------
// Disable webpack-specific features for tests since
// Mocha doesn't know what to do with them.
;[ '.css', '.scss', '.png', '.jpg', '.svg', '.xml' ].forEach(ext => {
  require.extensions[ext] = () => null
})

// shim for tests to avoid this warning:
// "React depends on requestAnimationFrame. Make sure that you load a polyfill in older browsers."
global.requestAnimationFrame = cb => {
  setTimeout(cb, 0)
}

// global define for leaflet-draw use of `L`
// even though it should be defined in src context
global.L = require('leaflet')

//
const enzyme = require('enzyme')
const Adapter = require('enzyme-adapter-react-16')
enzyme.configure({adapter: new Adapter()})